Cov kev sim thiab kev paub ntawm cov resistors

1. Kev kuaj ntawm Varistors:
Ntsuas qhov kev tiv thaiv pem hauv ntej thiab thim rov qab ntawm ob tus pins ntawm varistor siv R × 1k ntau ntawm multimeter. Ob qho tseem ceeb yog infinite. Tsis tas li ntawd, nws qhia tau hais tias muaj cov dej xau siab. Yog hais tias qhov ntsuas kuj me me, nws qhia tau hais tias lub varistor puas thiab siv tsis tau.
2. Kev sim ntawm potentiometers:
Thaum kuaj xyuas lub potentiometer, thawj kauj ruam yog tig lub pob qhov rooj kom pom tias nws tig tau zoo, yog tias qhov hloov pauv hloov tau, yog tias lub suab "nias" yog nkig thaum lub qhov hloov pauv tau qhib lossis kaw, thiab mloog lub suab ntawm kev sib txhuam. nruab nrab ntawm cov ntsiab lus sab hauv ntawm lub potentiometer thiab cov resistor. Yog tias muaj lub suab "rustling", nws qhia tias tsis zoo. Thaum kuaj nrog ib tug multimeter, ua ntej xaiv qhov tsim nyog kuj ntau yam ntawm lub multimeter raws li tus nqi tsis kam ntawm lub potentiometer raug kuaj, thiab tom qab ntawd ua qhov kev xeem raws li cov hauv qab no.
Siv lub ohm ntau yam ntawm ib lub multimeter los ntsuas qhov "1" thiab "2" xaus, thiab kev nyeem ntawv yuav tsum yog tus nqi tsis kam ntawm potentiometer. Yog hais tias tus pointer ntawm lub multimeter tsis txav los yog tus nqi kuj txawv heev, nws qhia tau hais tias lub potentiometer puas lawm.
Xyuas seb qhov kev sib cuag ntawm lub caj npab txav ntawm lub potentiometer thiab lub resistor puas zoo. Siv lub ohm ntau ntawm ib lub multimeter los ntsuas qhov kawg ntawm "1" thiab "2". Tig lub potentiometer ncej counterclockwise rau ib txoj hauj lwm ze rau "tawm", thiab qhov me me ntawm cov nqi kuj, qhov zoo dua. Maj mam tig lub ncej clockwise dua, tus nqi kuj yuav tsum maj mam nce, thiab tus pointer nyob rau hauv lub 'meter' lub taub hau yuav tsum txav tsis tu ncua. Thaum tus ncej kov tig mus rau qhov chaw huab cua "3", tus nqi kuj yuav tsum nyob ze rau tus nqi nominal ntawm potentiometer. Yog hais tias tus pointer ntawm lub multimeter bounces thaum lub sij hawm kev sib hloov ntawm lub potentiometer ncej, nws qhia tau hais tias ib tug ua txhaum ntawm kev sib cuag tsis zoo ntawm cov movable hu.
3. Kev txheeb xyuas ntawm Fused Resistor:
Nyob rau hauv ib lub voj voog, thaum lub fuse resistor yog tshuab qhib, nws tuaj yeem txiav txim siab raws li kev paub: yog tias pom tias qhov saum npoo ntawm lub fuse resistor yog dub los yog hlawv, nws tuaj yeem txiav txim siab tias nws cov load hnyav dhau, thiab tam sim no dhau mus. los ntawm nws tshaj tus nqi ntsuas los ntawm ntau zaus; Yog tias tsis muaj kab nyob rau ntawm nws qhov chaw thiab nws qhib, nws qhia tau hais tias cov dej ntws tam sim no yog sib npaug los yog me ntsis ntau dua li nws cov nqi melting. Rau qhov kev txiav txim siab ntawm qhov zoo ntawm lub fuse resistor yam tsis muaj kab nyob rau saum npoo, multimeter R × 1 tuaj yeem siv los ntsuas nws. Yuav kom ntsuas qhov tseeb, ib qho kawg ntawm fuse resistor yuav tsum tau muab tshem tawm ntawm lub voj voog. Yog tias qhov ntsuas ntsuas qhov ntsuas tsis muaj qhov kawg, nws qhia tau tias lub fuse resistor tau ua tsis tiav thiab qhib. Yog tias qhov ntsuas qhov ntsuas tsis zoo nyob deb ntawm tus nqi nominal, nws qhia tau tias qhov kev tiv thaiv tau hloov pauv thiab yuav tsum tsis txhob siv dua. Hauv kev xyaum tu, nws tau pom tias kuj tseem muaj ob peb lub fuse resistors uas tau tawg thiab luv luv hauv Circuit Court, thiab yuav tsum tau them nyiaj thaum kuaj.
4. Kev ntsuam xyuas ntawm cov resistors:
Txuas ob lub probes mus rau ob tus pins ntawm tus resistor los ntsuas qhov tseeb tus nqi tiv thaiv. Txhawm rau txhim kho kev ntsuas qhov tseeb, qhov ntau yuav tsum raug xaiv raws li tus nqi nominal ntawm qhov ntsuas tsis kam. Vim tias qhov tsis sib xws ntawm Ohm nplai, qhov nruab nrab ntawm qhov ntsuas muaj qhov sib faib meej dua. Yog li ntawd, lub pointer yuav tsum tau muab tso rau kom ze li sai tau mus rau nruab nrab ntawm lub teev, uas yog nyob rau hauv qhov ntau ntawm 20% mus rau 80% ntawm lub arc thaum pib ntawm tag nrho cov teev, thiaj li yuav ua rau qhov ntsuas ntau yog. Nyob ntawm theem ntawm kev ua yuam kev tsis kam. Qhov yuam kev ntawm ± 5%, ± 10%, lossis ± 20% raug tso cai nyob nruab nrab ntawm kev nyeem ntawv thiab tus nqi nominal tsis kam, feem. Yog tias nws tsis sib xws thiab dhau qhov kev ua yuam kev ntau, nws qhia tias tus nqi tiv thaiv tau hloov pauv.
B ceev faj: Thaum lub sij hawm sim, tshwj xeeb tshaj yog thaum ntsuas cov resistors nrog qhov tseem ceeb ntawm kev tiv thaiv ntawm kaum ntawm k Ω lossis ntau dua, tsis txhob kov cov khoom siv hluav taws xob ntawm cov kev sojntsuam thiab cov resistors nrog koj txhais tes; Qhov ntsuas qhov ntsuas yuav tsum tau muab tshem tawm ntawm lub voj voog, yam tsawg kawg yog ib qho kawg yuav tsum tau soldered qhib kom tiv thaiv lwm yam khoom hauv Circuit Court los ntawm kev cuam tshuam qhov kev xeem thiab ua rau kev ntsuas yuam kev; Txawm hais tias tus nqi tsis kam ntawm lub nplhaib xim resistor tuaj yeem txiav txim siab los ntawm cov cim xim nplhaib, nws yog qhov zoo tshaj plaws los siv ib lub multimeter los ntsuas nws cov nqi tiv thaiv tiag tiag thaum siv.